CN220236833U - Dish washer wind channel heater and dish washer - Google Patents

Abstract

The utility model belongs to the field of dish washers, and discloses a dish washer air duct heater and a dish washer, wherein the dish washer air duct heater comprises a shell, and an air passage channel is formed between an air inlet end and an air outlet end of the shell; the heating wire is arranged in the shell in an extending way; the heating wire is spaced from the inner wall of the shell. According to the utility model, the air passage is arranged corresponding to the heating wire, and the air enters from the air passage, so that the heat released by the heating wire can be taken away as much as possible, the temperature of the formed hot air is higher, and the heating effect of the heater is enhanced; air passes through on the heater strip fast for hot-blast gathering is on the wind path passageway, can have the position of interval at heater strip and shells inner wall and form the isolation air curtain, avoids heat transfer to the casing, is favorable to protecting the casing, prolongs the life of casing.

Description

Dish washer wind channel heater and dish washer

Technical Field

The utility model belongs to the field of dish washers, and particularly relates to an air duct heater of a dish washer and the dish washer.

Background

A dishwasher is a device for automatically washing dishes such as bowls, chopsticks, plates, dishes, knives, forks, etc. The dish washer firstly cleans the tableware, and after the tableware is cleaned, the tableware is heated and dried. Therefore, the dish washer needs to be provided with a cleaning device, an air supply device, a heater, a corresponding air duct and the like. The air supply device supplies air, the air can be changed into hot air through the heater, the hot air then enters the air duct, and the air duct transmits the hot air to the tableware to dry the tableware.

In the prior art, the dish washer has poor drying function, can cause incomplete drying of tableware, is easy to breed bacteria, and has long drying time. The heating wire in the air duct heater has poor heating effect, and high-temperature air can be generated in the shell of the heater when the heating wire is heated, so that the temperature of the shell of the heater is increased, and the service life of the shell is short.

The present utility model has been made in view of this.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and aims to provide the air duct heater of the dish washer, wherein the air duct channel is arranged corresponding to the heating wire, and air enters from the air duct channel, so that heat released by the heating wire can be taken away as much as possible, the formed hot air temperature is higher, and the heating effect of the heater is enhanced; air passes through on the heater strip fast for hot-blast gathering is on the wind path passageway, can have the position of interval at heater strip and shells inner wall and form the isolation air curtain, avoids heat transfer to the casing, is favorable to protecting the casing, prolongs the life of casing.

Another object of the present utility model is to provide a dishwasher.

In order to solve the technical problems, the utility model adopts the basic conception of the technical scheme that: there is provided a dishwasher air duct heater, the dishwasher air duct heater comprising,

the air inlet end and the air outlet end of the shell form an air path channel;

the heating wire is arranged in the shell in an extending way;

the heating wire is spaced from the inner wall of the shell.

Further, a fixing piece is arranged at one end of the shell, one end of the shell is assembled on the fixing piece, a ventilation cavity communicated with the air path channel is formed in the middle area of the fixing piece, and a space is reserved between the inner wall of the ventilation cavity and the inner wall of the shell.

Further, a supporting piece connected with the shell is arranged in the shell, the supporting piece comprises a first supporting plate and a second supporting plate which are arranged in a crossing mode, a plurality of first mounting grooves are formed in two opposite sides of the second supporting plate, and a plurality of second mounting grooves are formed in two opposite sides of the first supporting plate;

the heating wire is arranged in the first mounting groove and the second mounting groove and extends spirally along the axial direction of the supporting piece;

the supporting piece and the fixing piece are arranged at intervals.

Further, the heating wire is spiral, the cross section of the heating wire spirally wound on the supporting piece is similar to a quadrangle, and the projection of the heating wire on the ventilation cavity along the axial direction is basically close to the inner wall of the ventilation cavity in the ventilation cavity, and part of the heating wire is connected with the inner wall of the ventilation cavity.

Further, the fixing piece comprises a first connecting portion and a second connecting portion which are integrally arranged, the second connecting portion is a protruding structure or a recessed structure which is arranged on the side face of the fixing piece and is coaxial with the ventilation cavity, the end portion of the shell is matched and fixed with the protruding structure or the recessed structure, and the minimum distance between the shell and the inner wall of the ventilation cavity is basically the same as the distance between the heating wire and the inner wall of the shell.

Further, the second connecting portion is of a protruding structure, one end of the first connecting portion is provided with a wiring groove, and a power line of the heating wire penetrates through the ventilation cavity and is led out through the wiring groove.

Further, a first limit groove is formed in the shell, a first protruding portion matched with the first limit groove is arranged on the first support plate, a heat insulation piece is arranged on the inner wall of the shell, a second limit groove matched with the first protruding portion is formed in the heat insulation piece, and the first protruding portion sequentially penetrates through the second limit groove and the first limit groove.

Further, the utility model also provides a dish-washing machine, which comprises the dish-washing machine air duct heater.

Further, the dishwasher further comprises an air supply device with a duct fan, and the duct, the ventilation cavity and the shell of the duct fan are correspondingly arranged and the central axes of the duct and the ventilation cavity are overlapped.

Further, the duct of the duct fan is formed by encircling a duct inner ring and a duct outer ring, and the inner wall of the duct outer ring is correspondingly arranged with the inner wall of the ventilation cavity.

By adopting the technical scheme, compared with the prior art, the utility model has the following beneficial effects.

(1) According to the utility model, the air passage is arranged corresponding to the heating wire, and the air enters from the air passage, so that the heat released by the heating wire can be taken away as much as possible, the temperature of the formed hot air is higher, and the heating effect of the heater is enhanced; air passes through on the heater strip fast for hot-blast gathering is on the wind path passageway, can have the position of interval at heater strip and shells inner wall and form the isolation air curtain, avoids heat transfer to the casing, is favorable to protecting the casing, prolongs the life of casing.

(2) According to the utility model, the heating wire is spirally wound on the support piece along the first mounting groove and the second mounting groove, so that the total length of the heating wire can be increased, the resistance of the heating wire is further increased, and the heat released by the heating wire is increased.

(3) The central axes of the duct, the ventilation cavity and the shell of the duct fan are coincident, so that wind can smoothly pass through, and the loss of wind in the flowing process is reduced.

The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort. In the drawings:

FIG. 1 is a schematic view of a dishwasher air duct heater of the present utility model;

FIG. 2 is an exploded view of FIG. 1 in accordance with the present utility model;

FIG. 3 is a schematic view of a support member of the present utility model;

FIG. 4 is a schematic view of the utility model at another angle to FIG. 3;

FIG. 5 is a schematic view of a heating wire in the present utility model;

FIG. 6 is a schematic view of a fastener of the present utility model;

FIG. 7 is a schematic view of the utility model from another angle than FIG. 6;

FIG. 8 is a schematic illustration of the relative positions of a ducted fan, fasteners and housing of the present utility model;

FIG. 9 is a schematic illustration of the attachment of the mount to the housing of the present utility model;

FIG. 10 is a schematic view of the wind flow of the jet wind path of the present utility model as it passes through the heating device;

fig. 11 is a schematic cross-sectional view of a drying module according to the present utility model.

In the figure: 1. an air supply device; 11. a ducted fan; 2. a fixing member; 20. wiring grooves; 21. a first connection portion; 22. a second connecting portion; 221. the clamping bulge; 23. a ventilation chamber; 3. a heating device; 31. a support; 311. a first support plate; 3110. a protruding portion; 3111. a first projection; 3112. a second projection; 312. a second support plate; 3121. a first protrusion; 3122. a first mounting groove; 3113. a second protrusion; 3114. a third protrusion; 3115. a second mounting groove; 32. a housing; 321. a first limit groove; 322. a first side plate; 323. a second side plate; 324. a third side plate; 325. a fourth side plate; 326. a bayonet; 33. a heating wire; 341. a first mica sheet; 342. a second mica sheet; 3421. and the second limit groove.

It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model, and the following embodiments are used to illustrate the present utility model, but are not intended to limit the scope of the present utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 11, a dishwasher air duct heater according to the present utility model includes a housing 32 and a heating wire 33.

An air path channel is formed between the air inlet end and the air outlet end of the shell 32. Wind enters the shell 32 from the air inlet end, and is heated by the heating wire 33 and then is discharged from the air outlet end.

The heating wire 33 is extended in the housing 32, and the air passage passes through the heating wire 33.

The air passage is arranged corresponding to the heating wire 33. The heating wire 33 can instantaneously generate a large amount of heat.

The heating wire 33 has a distance from the inner wall of the housing 32.

In the utility model, the air passage is arranged corresponding to the heating wire 33, and air enters from the air passage, so that heat released by the heating wire 33 can be taken away as much as possible, and the formed hot air has higher temperature, thereby being beneficial to enhancing the heating effect of the heater; air passes through the heating wire 33 quickly, so that hot air is collected on the air passage, an isolation air curtain can be formed at the position of the heating wire 33 with a space between the heating wire and the inner wall of the shell 32, heat transfer to the shell 32 is avoided, the shell 32 is protected, and the service life of the shell 32 is prolonged.

The inner wall of the housing 32 is an inner peripheral wall between the air inlet end and the air outlet end of the housing 32.

The air passage channel is a jet-flow air passage. The heating wire 33 is disposed in the housing 32, and extends between the air inlet end and the air outlet end of the housing 32. The jet-shaped air passage is arranged corresponding to the heating wire 33. The heating wire 33 can instantaneously generate a large amount of heat.

According to the utility model, the jet-flow-shaped air passage is arranged for the heating wire 33, and air enters from the jet-flow-shaped air passage, so that heat released by the heating wire 33 can be taken away as much as possible, and the formed hot air has higher temperature, thereby being beneficial to enhancing the heating effect of the heater; the heating wire 33 is arranged opposite to the jet-flow-shaped air passage, after the jet-flow-shaped air passage is used for air intake, an isolation air curtain is formed at a position with a space between the heating wire 33 and the inner wall of the shell 32, so that heat is prevented from being transferred to the shell 32, the shell 32 is protected, and the service life of the shell 32 is prolonged.

The jet from the ventilation chamber 23 of the housing 32 draws in ambient fluid by active turbulent mixing at the jet-like air path boundary and flows out of the ventilation chamber 23.

The jet-shaped air passage may be a cylindrical jet-shaped air passage, and the heating wire 33 is spirally wound in a cylindrical structure (refer to fig. 10). When the heater is used for air intake, the cylindrical jet air passage passes through the cylindrical structure formed by winding the heating wire 33, so that air on the inner periphery and the outer periphery of the cylindrical structure of the heating wire 33 can be sucked onto the jet air passage, and an isolation air curtain is formed at the interval between the heating wire 33 and the inner wall of the shell 32.

Air can be introduced into the heater through the air supply device 1. The air supply device 1 comprises a jet fan. The force of a jet fan on the air is commonly referred to as thrust. The control parameters selected by the jet fan are as follows: air volume, air pressure, noise, etc.

One end of the housing 32 is provided with a fixing piece 2, one end of the housing 32 is assembled on the fixing piece 2, a middle area of the fixing piece 2 is provided with a ventilation cavity 23 communicated with the air path channel, and a space is reserved between the inner wall of the ventilation cavity 23 and the inner wall of the housing 32.

The projection of the cylindrical structure onto the ventilation chamber 23 in the air supply direction is located on the edge inside the ventilation chamber 23.

The jet-shaped air outlet in the jet blower fan flows to the heating wire 33 inside the shell 32 under the guidance of the inner wall of the ventilation cavity 23, and the ventilation cavity 23 can prevent the air outlet from dispersing in the flowing process of the jet-shaped air outlet direction heating wire 33, so that the air inlet of the jet-shaped air outlet direction heating wire 33 is maintained.

The ventilation cavity 23 is communicated with the air path channel, so that the air in the ventilation cavity 23 can flow into the air path channel.

If the ventilation chamber 23 is extended toward the housing 32, the extension is located in the housing 32. The wind in the ventilation chamber 23 passes substantially through the inside of the housing 32.

The fixing piece 2 is a heat insulation component. The heating wire 33 is located at one side of the fixing member 2, and can generate a large amount of heat, and the fixing member 2 is provided as a heat insulation member, so as to play a role of heat insulation, thereby being beneficial to protecting the parts at the other side of the fixing member 2.

Preferably, the fixing member 2 is a ceramic base.

The shell 32 is internally provided with a supporting piece 31 connected with the shell 32, the supporting piece 31 comprises a first supporting plate 311 and a second supporting plate 312 which are arranged in a crossing way, two opposite sides of the second supporting plate 312 are provided with a plurality of first mounting grooves 3122, and two opposite sides of the first supporting plate 311 are provided with a plurality of second mounting grooves 3115.

The heating wire 33 is disposed within the first and second mounting grooves 3122 and 3115 and extends spirally along the axial direction of the support 31.

The heating wire 33 is disposed along the first mounting groove 3122 and the second mounting groove 3115, and the winding radius of the heating wire 33 is increased, so that the total length of the heating wire 33 is increased, heat generated by the heating wire 33 can be increased, and the heating effect of the heater is improved.

Specifically, the first mounting groove 3122 and the second mounting groove 3115 each have a sufficient depth. The heater strip 33 is disposed along the first mounting groove 3122 and the second mounting groove 3115, so that the winding radius of the heater strip 33 may be increased, the total length of the heater strip 33 may be increased, the resistance of the heater strip 33 may be increased along with the increase of the length thereof, and the heat generated by the heater strip 33 may be increased along with the increase of the resistance, so that the heater strip 33 may release more heat, and the heating effect may be enhanced under the action of the air supply device 1, so as to satisfy the user's requirement.

The heater wire 33 is spirally wound around the support member 31 along the first mounting groove 3122 and the second mounting groove 3115, so that the heater wire 33 can be limited, and the shaking of the heater wire 33 can be reduced.

A plurality of first protrusions 3121 are disposed on opposite sides of the second support plate 312, and the first protrusions 3121 are abutted with the inner sidewall of the housing 32. A first mounting groove 3122 is formed between adjacent first protrusions 3121.

The first support plate 311 is provided with protrusions 3110 on opposite sides thereof. The protrusion 3110 includes a first protrusion 3111 and second protrusions 3112 disposed at both sides of the first protrusion 3111. The first protruding portion 3111 is longer than the second protruding portion 3112, and the first protruding portion 3111 and the second protruding portion 3112 located on the same side of the first support plate 311 are disposed with high middle and low sides, and are shaped like a mountain.

The first protrusion 3111 includes a plurality of second protrusions 3113, the second protrusion 3112 includes a plurality of third protrusions 3114, the second protrusions 3113 are longer than the third protrusions 3114, two adjacent second protrusions 3113, two adjacent third protrusions 3114, and a second mounting groove 3115 is formed between the second protrusions 3113 and the third protrusions 3114, and the heating wire 33 is disposed along the first mounting groove 3122 and the second mounting groove 3115.

The shell 32 is provided with a first limit groove 321, the first support plate 311 is provided with a first protruding portion 3111 matched with the first limit groove 321, the inner wall of the shell 32 is provided with a heat insulating member, the heat insulating member is provided with a second limit groove 3421 matched with the first protruding portion 3111, and the first protruding portion 3111 sequentially passes through the second limit groove 3421 and the first limit groove 321.

A portion of the first protrusion 3111 longer than the second protrusion 3112 is inserted into the first stopper 321 on the sidewall of the housing 32. The first protruding portion 3111 may protrude from the first limiting groove 321, or may be disposed flush with the outer surface of the housing 32. The entire first protruding portion 3111 abuts against the inner wall of the first limiting slot 321. The second protruding portion 3112 abuts against the inner wall of the housing 32, so that the connection between the first support plate 311 and the housing 32 is more stable.

In one embodiment of the present utility model, the housing 32 includes a first side plate 322, a second side plate 323, a third side plate 324, and a fourth side plate 325, wherein the first side plate 322, the second side plate 323, the third side plate 324, and the fourth side plate 325 are sequentially bent and connected, and the first side plate 322 is clamped with the fourth side plate 325.

The first side plate 322, the second side plate 323, the third side plate 324 and the fourth side plate 325 are sequentially bent and connected to form a cuboid box body with two open ends after being sequentially bent, and the first side plate 322 and the fourth side plate 325 are clamped to form a stable shell 32, so that the support piece 31 is convenient to install.

Specifically, the distance between the first protrusions 3111 disposed on opposite sides of the first support plate 311 is greater than the distance between the opposite inner sidewalls of the housing 32, so that the housing 32 needs to be opened first, the support 31 is put in, and then the housing 32 is closed. The housing 32 is a sheet metal part.

The second side plate 323 and the fourth side plate 325 are respectively provided with the first limiting groove 321, and the first limiting groove 321 is inserted into the first protruding portion 3111.

When in use, after the housing 32 is opened, the first side plate 322, the second side plate 323 and the third side plate 324 may be bent, at this time, the fourth side plate 325 is in a horizontal placement state, then the supporting member 31 is placed in the first protruding portion 3111 on one side of the supporting member 31 is inserted into the first limiting groove 321 on the second side plate 323, then the fourth side plate 325 is bent, in this process, the first limiting groove 321 on the fourth side plate 325 is inserted into the first protruding portion 3111 on the other side of the supporting member 31, and then the first side plate 322 and the fourth side plate 325 are clamped.

By arranging the heat insulating member, the heat insulating effect can be achieved, the heat transferred from the heating wire 33 to the position of the shell 32 is reduced, the shell 32 can be protected, and the service life of the shell 32 is prolonged; the protrusion is inserted into the second limiting groove 3421, so that the supporting member 31 and the heat insulating member are stably connected.

As shown in fig. 2, the heat insulating member includes a first mica sheet 341 and a second mica sheet 342, the inner sides of the first side plate 322 and the third side plate 324 are respectively provided with the first mica sheet 341, the inner sides of the second side plate 323 and the fourth side plate 325 are respectively provided with the second mica sheet 342, the second mica sheet 342 is provided with a second spacing groove 3421 matched with the second protrusion 3113, and the second protrusion 3113 sequentially passes through the second spacing groove 3421 and the first spacing groove 321.

The first mica sheet 341 and the second mica sheet 342 are disposed on the inner side wall of the casing 32, so that insulation and heat insulation effects can be achieved, heat transferred from the heating wire 33 to the casing 32 is reduced, the casing 32 can be protected, and the service life of the casing 32 is prolonged. The second mica sheet 342 is provided with the second limiting groove 3421 matched with the second protrusion 3113. The number of the second limiting grooves 3421 is the same as that of the second protrusions 3113, and the second limiting grooves 3421 are disposed corresponding to the first limiting grooves 321. The second protrusions 3113 are matched with the second limiting grooves 3421, so that the first support plate 311 and the second mica sheet 342 are stably connected and are not easy to shake. When the air blowing device 1 blows air, noise generated by collision between the supporting member 31 and the second mica sheet 342 can be reduced.

The supporting member 31 is spaced from the fixing member 2 by a distance.

The heating wire 33 is mounted on the supporting member 31, a space is reserved between the supporting member 31 and the fixing member 2, so that a space is reserved between the heating wire 33 and the fixing member 2, and heat transferred from the heating wire 33 to the other side of the fixing member 2 is reduced.

The heating wire 33 itself is spiral. The cross section of the heating wire 33 spirally wound on the supporting member 31 is similar to a quadrangle.

The heating wire 33 is spirally wound on the support member 31 along the first and second mounting grooves 3122 and 3115, so that the total length of the heating wire 33 can be increased, thereby increasing the resistance of the heating wire 33 and increasing the heat released from the heating wire 33.

The projection of the heating wire 33 onto the ventilation chamber 23 along the axial direction is substantially close to the inner wall of the ventilation chamber 23 within the ventilation chamber 23 and partly adjoins the inner wall of the ventilation chamber 23.

The wind entering the ventilation chamber 23 forms an annular curtain of wind and the wind flows along the inner wall of the ventilation chamber 23 and then enters the housing 32. The air outlet from the ventilation cavity 23 corresponds to the heating wire 33, and as much heat released by the heating wire 33 is taken away as possible.

Specifically, the heating wire 33 is bent from one wire to form a spiral coil having a plurality of spiral structures, and then the spiral coil is wound along the plurality of first mounting grooves 3122 and the plurality of second mounting grooves 3115, so that the total length of the heating wire 33 wound on the support 31 can be increased, thereby increasing the resistance of the heating wire 33 and increasing the heat released from the heating wire 33.

Specifically, the winding diameter of the heating wire 33 with the supporting member 31 is 30-200mm. The number of windings of the heating wire 33 on the support member 31 is 5-20. The axial length of the heating wire 33 after being spirally wound on the support member 31 is 30-100mm. The heating power of the heating wire 33 is 200-800W. The heating density of the heating wire 33 is 5-10W/cm ² 。

The fixing piece 2 comprises a first connecting part 21 and a second connecting part 22 which are integrally arranged, and the second connecting part 22 is a convex structure or a concave structure which is arranged on the side surface of the fixing piece 2 and is coaxial with the ventilation cavity 23. The end of the housing 32 is fixed in cooperation with the protruding structure or the recessed structure.

If the second connecting portion 22 is of a protruding structure, the end portion of the housing 32 should be provided with a corresponding slot-shaped structure, so as to fix one end of the housing 32 to the second connecting portion 22.

If the second connecting portion 22 is of a concave structure, the end portion of the housing 32 should be provided with a corresponding inward convex structure, so as to fix one end of the housing 32 to the second connecting portion 22.

The minimum distance between the housing 32 and the inner wall of the ventilation chamber 23 is substantially the same as the distance between the heating wire 33 and the inner wall of the housing 32.

The wind in the ventilation chamber 23 is in direct correspondence with the heating wire 33.

The second connecting portion 22 is of a protruding structure, one end of the first connecting portion 21 is provided with a wiring groove 20, and a power line of the heating wire 33 passes through the ventilation cavity 23 and is led out from the wiring groove 20.

Specifically, the second connecting portion 22 has a locking protrusion 221, the housing 32 is provided with a bayonet 326, and the locking protrusion 221 is locked with the bayonet 326, so that the housing 32 can be mounted on the fixing member 2.

The wiring groove 20 is communicated with the ventilation cavity 23 and is arranged at one end of the first connecting portion 21. Wind flows in the ventilation chamber 23, passing through the first and second connection parts 21 and 22 in sequence. The power line of the heating wire 33 may be cooled, which is beneficial to protecting the power line of the heating wire 33.

The utility model also provides a dish-washing machine, which comprises any dish-washing machine air duct heater.

The dishwasher further comprises an air supply device 1 with a duct fan 11, wherein the duct of the duct fan 11, the ventilation cavity 23 and the shell 32 are correspondingly arranged and the central axes of the duct fan and the ventilation cavity are coincident.

The dishwasher includes a drying module and an air duct. The drying module comprises an air supply device 1 and a heating device 3, wherein the air supply device 1 comprises a fan protection cover and a ducted fan 11 arranged in the fan protection cover, the heating device 3 comprises a heater protection cover, a heater arranged in the heater protection cover and a fixing piece 2, and the fan protection cover is connected with the heater protection cover.

Wind generated by the ducted fan 11 sequentially passes through the duct of the ducted fan 11, the ventilation cavity 23 and the shell 32, and respective central axes are coincident, so that the wind can smoothly pass through, and the loss of the wind in the flowing process is reduced.

The fixing piece 2 is arranged between the ducted fan 11 and the heating wire 33. The fixing piece 2 has a good insulation effect, and the heat released by the heating wire 33 is prevented from damaging the ducted fan 11 by arranging the fixing piece 2.

After the ducted fan 11 is started, the air is quickly changed into hot air, the temperature is quickly up to 50 ℃ and above, the hot air reaches the inner container of the dish-washing machine along the air duct 5, the quick drying function is realized, and the tableware in the dish-washing machine is air-dried.

When in use, the heater wire 33 is operated for a period of time, and after a certain amount of heat is released, the ducted fan 11 is turned on, so that the condition that the sent air does not reach a proper temperature due to the fact that the wind power of the ducted fan 11 is large is avoided.

The duct of the duct fan 11 is formed by surrounding a duct inner ring and a duct outer ring, and the inner wall of the duct outer ring is correspondingly arranged with the inner wall of the ventilation cavity 23.

The duct outer ring is arranged close to the ventilation lumen 23.

Preferably, the jet fan is the ducted fan 11. The ducted fan 11 comprises a fan housing in which a motor is arranged. The ducted fan 11 has an air inlet passage and an air outlet passage. The rotating shaft of the motor coincides with the central axis of the air inlet channel. The ducted fan 11 further comprises a fan which is enclosed in the fan housing, and the section of the fan is in a curved crescent shape. The air outlet channel is in a duct shape, a larger cylinder is sleeved outside the cylinder, the two cylinders are connected through a connecting strip, and the annular channel between the two cylinders is the duct. The fan blade of the fan faces the duct, wind is transmitted from the duct, the rotation axis of the fan coincides with the central axes of the air inlet channel and the duct, and the wind pressure generated by the structure is large, the wind resistance is small, and the wind quantity is large.

More preferably, the rotational speed of the ducted fan 11 is 40000-100000RPM.

The duct is an annular channel, an annular air curtain is formed in the duct, and the wind generated by the duct fan 11 has the characteristics of high wind pressure and high wind quantity, so that the annular air curtain can last for a period of time. The heating wire 33 is wound around the support 31 to form a cylindrical structure. The annular air curtain passes through the cylindrical structure, so that heat released by the heating wire 33 can be taken away as much as possible, hot air with higher temperature can be formed, and the drying effect is enhanced.

The foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited to the above-mentioned embodiment, but is not limited to the above-mentioned embodiment, and any simple modification, equivalent change and modification made by the technical matter of the present utility model can be further combined or replaced by the equivalent embodiment without departing from the scope of the technical solution of the present utility model.

Claims (10)

1. An air duct heater of a dish-washing machine, which is characterized in that: comprising the steps of (a) a step of,

the air inlet end and the air outlet end of the shell (32) form an air path channel;

a heating wire (33), wherein the heating wire (33) is arranged in the shell (32) in an extending way;

the heating wire (33) is spaced from the inner wall of the shell (32);

the air passage is a cylindrical jet air passage, the heating wire (33) is spirally wound to form a cylindrical structure, and the air passage is arranged corresponding to the heating wire (33).

2. The dishwasher tunnel heater of claim 1, wherein: one end of the shell (32) is provided with a fixing piece (2), one end of the shell (32) is assembled on the fixing piece (2), a middle area of the fixing piece (2) is provided with a ventilation cavity (23) communicated with the air path channel, and an interval is reserved between the inner wall of the ventilation cavity (23) and the inner wall of the shell (32).

3. The dishwasher tunnel heater of claim 2, wherein:

a supporting piece (31) connected with the shell (32) is arranged in the shell (32), the supporting piece (31) comprises a first supporting plate (311) and a second supporting plate (312) which are arranged in a crossing mode, a plurality of first mounting grooves (3122) are formed in two opposite sides of the second supporting plate (312), and a plurality of second mounting grooves (3115) are formed in two opposite sides of the first supporting plate (311);

the heating wire (33) is arranged inside the first mounting groove (3122) and the second mounting groove (3115) and extends spirally along the axial direction of the support (31);

the supporting piece (31) and the fixing piece (2) are arranged at a distance and interval.

4. A dishwasher tunnel heater according to claim 3, wherein: the heating wire (33) is spiral, the cross section of the heating wire (33) spirally wound on the supporting piece (31) is similar to a quadrangle, and the projection of the heating wire (33) on the ventilation cavity (23) along the axial direction is close to the inner wall of the ventilation cavity (23) in the ventilation cavity (23), and part of the heating wire is connected with the inner wall of the ventilation cavity (23).

5. The dishwasher tunnel heater of claim 4, wherein: the fixing piece (2) comprises a first connecting part (21) and a second connecting part (22) which are integrally arranged, the second connecting part (22) is a protruding structure or a recessed structure which is arranged on the side face of the fixing piece (2) and is coaxial with the ventilation cavity (23), the end part of the shell (32) is matched and fixed with the protruding structure or the recessed structure, and the minimum distance between the shell (32) and the inner wall of the ventilation cavity (23) is the same as the distance between the heating wire (33) and the inner wall of the shell (32).

6. The dishwasher tunnel heater of claim 5, wherein: the second connecting portion (22) is of a protruding structure, one end of the first connecting portion (21) is provided with a wiring groove (20), and a power line of the heating wire (33) penetrates through the ventilation cavity (23) and is led out through the wiring groove (20).

7. The dishwasher tunnel heater of claim 6, wherein: be equipped with first spacing groove (321) on casing (32), be equipped with on first backup pad (311) with first spacing groove (321) assorted first bulge (3111), the inner wall of casing (32) is equipped with the insulating part, be equipped with on the insulating part with first bulge (3111) assorted second spacing groove (3421), first bulge (3111) are passed in proper order second spacing groove (3421) with first spacing groove (321).

8. A dishwasher, characterized in that: a dishwasher appliance comprising a dishwasher appliance air duct heater as claimed in any one of claims 1 to 7.

9. The dishwasher of claim 8, characterized in that: the air supply device is characterized by further comprising an air supply device (1) with a duct fan (11), wherein the duct, the ventilation cavity (23) and the shell (32) of the duct fan (11) are correspondingly arranged and the central axes of the duct and the ventilation cavity coincide.

10. The dishwasher of claim 9, characterized in that: the duct of the duct fan (11) is formed by encircling a duct inner ring and a duct outer ring, and the inner wall of the duct outer ring is correspondingly arranged with the inner wall of the ventilation cavity (23).